Ground rod



FIG. 1 is a perspective view showing the invention inserted into the ground. The broken lines showing the surface of the ground are included for illustrating environment only and form no part of the claimed design;

FIG. 2 is a top view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof.

The rod in FIGS. 3, 4, 6 and 7 is shown broken away for the purpose of indicating indeterminate length. 

The ornamental design for a ground rod, as shown and described. 